Junos Troubleshooting in the NOC (JTNOC)

Junos Troubleshooting in the NOC (JTNOC) 

This four-day course is designed to provide introductory troubleshooting skills for engineers in a network operations center (NOC) environment. Key topics within this course include troubleshooting methodology, troubleshooting tools, hardware monitoring and troubleshooting, interface monitoring and troubleshooting, troubleshooting the data plane and control plane on devices running Junos OS, securing the control plane, staging and acceptance methodology, troubleshooting routing protocols, monitoring the network, troubleshooting vMX devices, and working with JTAC. This course uses virtual MX devices in the lab and is based on Junos OS Release 19.3R2.

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Course Level

Junos Troubleshooting in the NOC (JTNOC) is an introductory-level course.

Intended Audience

The course content is aimed at operators of devices running the Junos OS in a NOC environment. These operators include network engineers, administrators, support personnel, and reseller support personnel.


Students should have basic networking knowledge and an understanding of the Open Systems Interconnection (OSI) reference model and the TCP/IP protocol suite. Students should also attend the Introduction to the Junos Operating System (IJOS) course, or have equivalent experience prior to attending this class.


After successfully completing this course, you should be able to:

  • Reduce the time it takes to identify and isolate the root cause of an issue impacting your network.
  • Describe Junos products and related information and recovery options.
  • List various tools that can be used to troubleshoot Junos devices.
  • Explain Junos CLI commands used in troubleshooting.
  • Identify and isolate hardware issues.
  • Troubleshoot problems with the control plane.
  • Describe control plane protection features.
  • Troubleshoot problems with interfaces and other data plane components.
  • Describe the staging and acceptance methodology.
  • Troubleshoot routing protocols.
  • Describe how to monitor your network with SNMP, RMON, Junos Telemetry Interface, Junos Traffic Vision (formerly known as JFlow), and port mirroring.
  • Monitor and troubleshoot vMX routers.
  • Describe JTAC procedures and how to navigate the customer support site.

Course Contents

Day 1

Chapter 1: Course Introduction

Chapter 2: Troubleshooting as a Process

  • Before You Begin
  • The Troubleshooting Process
  • Challenging Network Issues

Chapter 3: Junos Product Families

  • The Junos OS
  • Control Plane and Data Plane
  • Field-Replaceable Units
  • Junos Product Families
  • Lab: Identifying Hardware Components

Chapter 4: Troubleshooting Toolkit

  • Troubleshooting Tools
  • Best Practices
  • Lab: Using Monitoring Tools and Establishing a Baseline

Day 2

Chapter 5: Hardware and Environmental Conditions

  • Hardware Troubleshooting Overview
  • Memory and Storage
  • Boot Monitoring
  • Hardware-Related System Logs
  • Chassis and Environmental Monitoring
  • Lab: Monitoring Hardware and Environmental Conditions

Chapter 6: Control Plane

  • Control Plane Review
  • System and User Processes
  • Monitoring Routing Tables and Protocols
  • Monitoring Bridging
  • Monitoring the Address Resolution Protocol
  • Lab: Control Plane Monitoring and Troubleshooting

Chapter 7: Control Plane Protection

  • Protection Overview
  • DDoS Protection
  • Loopback Filter
  • Lab: Monitoring and Troubleshooting DDoS Protection

Chapter 8: Data Plane – Interfaces

  • Interface Properties
  • General Interface Troubleshooting
  • Ethernet Interface Troubleshooting
  • Lab: Monitoring and Troubleshooting Ethernet Interfaces

Day 3

Chapter 9: Data Plane – Other Components

  • Definition of a Data Plane Problem
  • Data Plane Components
  • Data Plane Forwarding
  • Load-Balancing Behavior
  • Firewall Filters and Policers
  • Data Plane Troubleshooting Case Study
  • Lab: Isolate and Troubleshoot PFE Issues

Chapter 10: Staging and Acceptance Testing

  • Initial Inspection and Power-On
  • General System Checks
  • Interface Testing

Chapter 11: Troubleshooting Routing Protocols

  • Troubleshooting OSPF
  • Troubleshooting BGP
  • Troubleshooting Routing Loops and Route Oscillation
  • Lab: Troubleshooting Routing Protocols

Chapter 12: High Availability

  • High Availability Overview
  • Graceful Routing Engine Switchover
  • Graceful Restart
  • Nonstop Active Routing and Bridging
  • Unified In-Service Software Upgrade

Day 4

Chapter 13: Network Monitoring

  • SNMP
  • RMON
  • Telemetry
  • Flow Monitoring
  • Lab: Monitoring the Network

Chapter 14: vMX Troubleshooting

  • vMX Overview
  • Troubleshooting
  • Lab: Monitoring vMX

Chapter 15: JTAC Procedures

  • Opening a Support Case
  • Customer Support Tools
  • The Content of a PR
  • Transferring Files to JTAC

Appendix A: Interface Troubleshooting

  • Interface Troubleshooting Chart
  • Troubleshooting Various Interface Types

Appendix B: Junos RPM

  • RPM Overview
  • RPM Components
  • RPM Configuration
  • RPM Monitoring

  Below is a list of scheduled dates when this event will take place. Some events require registration for attendance so you will need to click on the date for more information regarding the specific event.

If you don't see the date you prefer, please email us at training@juniper.net to request a date or schedule your custom training session.

Display dates for 

Date  Subject Region Location Facilitator Language Status
10/5/2020 Junos Troubleshooting in the NOC (JTNOC) - ILT & ILO Americas (AMER) CDMX + Online SICAP Spanish Open
10/6/2020 Junos Troubleshooting in the NOC (JTNOC) - ILT & ILO Americas (AMER) Live Virtual Online Cosmos Security English Open
10/19/2020 Junos Troubleshooting in the NOC (JTNOC) - ILT & ILO Americas (AMER) Phoenix, AZ + Online Dynamic Worldwide English Open
11/9/2020 9:00 AM AEST Juniper Troubleshooting the NOC Asia Pacific (APAC) Online Datacipher - Australia & New Zealand English Open
11/30/2020 Junos Troubleshooting in the NOC (JTNOC) - ILT & ILO Americas (AMER) Phoenix, AZ + Online Dynamic Worldwide English Open
12/8/2020 7:30 AM PST Junos Troubleshooting in the NOC (JTNOC) - ILO Americas (AMER) AMER Online Juniper Networks English Open
3/1/2021 9:00 AM SGT Junos Troubleshooting in the NOC (JTNOC) - ILO Asia Pacific (APAC) APAC Online Juniper Networks English Open
3/1/2021 7:30 AM PST Junos Troubleshooting in the NOC (JTNOC) - ILO Americas (AMER) AMER Online Juniper Networks English Open